deps(deps): bump gulp-sourcemaps

Bumps the production-dependencies group with 1 update in the / directory: [gulp-sourcemaps](https://github.com/gulp-sourcemaps/gulp-sourcemaps).


Updates `gulp-sourcemaps` from 2.6.5 to 3.0.0
- [Release notes](https://github.com/gulp-sourcemaps/gulp-sourcemaps/releases)
- [Commits](gulp-sourcemaps/gulp-sourcemaps@v2.6.5...v3.0.0)

---
updated-dependencies:
- dependency-name: gulp-sourcemaps
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -57,7 +57,7 @@
     "gulp-git": "^2.10.0",
     "gulp-plumber": "^1.2.1",
     "gulp-sass": "^6.0.1",
-    "gulp-sourcemaps": "^2.6.5",
+    "gulp-sourcemaps": "^3.0.0",
     "gulp-uglify": "^3.0.2",
     "gulp-zip": "^6.1.0",
     "js-yaml": "^4.1.0",